Noah was, according to Genesis, perfect in his generations. This is by some taken to mean, that he had no nephilim genes, and therefore God could use him to be the father to a new humanity.

I can go along with that, BUT - that means, that also his parents, both mother and father, must have been perfect in the same way.

So, now we come to one of the conclusions that a thinking brain must come to here: If Noah's father was able to find a pure, nephilim-free wife, wouldn't also his three sons be able to do likewise? Of course.

Furthermore, it is very probable that these wifes were taken, or chosen, from the same family, the same nephilim-dna free family.

Thus, the blasphemic idea that some of Noah's son's wifes were carrying nephilim dna, is proved utterly false, and also, stupid.

Or do you mean, that Noah alone, all of a sudden, was born free from nephilim dna? While literally everyone else were contaminated? You must, if you are determined to hold on to this idea.

You must also hold the idea, that some small amount of nephilim dna, is able to create a nephilim spirit, in distant, future generations.

And that this little strain, all of a sudden, like 500 years later, can generate whole populations of giant tribes. Not likely. In that case, it would be able to do so, today also. Because there have been many giants mingling their dna with humanity through history. So where are all the popping up giant tribes, today? Nowhere to be found. Because it doesn't work that way.

Considering this, it is more likely that perfect in this context, means morally perfect, because Noah had found grace, in the eyes of God. Which is in line with the first verse in chapter 7, which probably isn't much read, when these kinds of theories, are formed.

Also, if you continue to read chapter 7, you will see that it was GOD who sent the animal pairs to Noah, and unto the Ark, so that only non-contamineted dna was brought onboard. So God could do this with the animals, but not with the human pairs?

You are making God look like an idiot with this idea. The whole point of killing the whole world, perhaps billions of intelligent beings, along with all the animals, was to get rid of the nephilim dna, and then he is so stupid he lets this same dna sneak onboard the ark, in one or more of Noah's son's wives? Who can believe in such a God?

And then they say, well there were nephilim also after the Flood, so how did they survive, then? The answer is that they didn't. There were new incursions, of corrupted angels, after the Flood - and now God had of course thought of this in advance, and it is therefore, much probably, he changes the lifespan of humanity, after the Flood. Because, after the Flood, the giants were much smaller, than before the Flood. They weren't such killing machines, as they used to be, in the old world. Before the Flood, they used to eat humans for breakfast, but after the Flood, they could be killed by humans, and even exterminated. God had taken care of the problem with new incursions. They were still a threat, but they could be beaten. This wasn't the case before the Flood.

And then, when put into a corner when confronted with the hybrids of the post-flood world, those who hold this idea, must flee into the even more blasphemic viewpoint, that the wives of Noah's sons, also were contaminated with animal dna. So Ham's wife, the favourite suspect, was a nephilim hybrid, then?

So it was she that was the mother of the Centaurs, the Chimeras, the Loch Ness monster, and the goat-men?

Wow, God really did a good job, when he cleansed the world from nephilim dna....

There is also an old idea, that king Og of Bashan was from before the Flood, and that he survived by sitting on the roof of the Ark. Besides from being just a silly fairy-tale type of story, it forgets that king Og only were about 4-5 meters tall, while the pre-flood giants must have been much much larger, as they ate all the food available on the Earth. So, King Og must have been a pygmy-giant, then?

Ham's wife?

I am also reminded, that the post-flood anganimals (chimeras) were of many different species, ie horsemen, bullmen, dogmen, snakemen, and so on, goatmen, fishmen, etc. So the wife of Ham must really have been out swirling around, if she had all of that in her, or her family must have.I can hear Ham talking to her, on the last day before the rain:- Come along now wify, it's time to go onboard the Ark!- Grff, grouff! (Thump, thump)And Noah didn't suspect anything, and of course, not God either.___